private static bool Apply_connect(ref INTERNET_PER_CONN_OPTION_LIST options, string conn)
{
options.Connection = StringUtils.IntPtrFromString(conn);
var optionsPtr = Marshal.AllocCoTaskMem(options.Size); //free
Marshal.StructureToPtr(options, optionsPtr, false);
var ret = NativeMethods.InternetSetOption(IntPtr.Zero, INTERNET_OPTION.INTERNET_OPTION_PER_CONNECTION_OPTION, optionsPtr, Marshal.SizeOf(typeof(INTERNET_PER_CONN_OPTION_LIST)));
Marshal.FreeCoTaskMem(optionsPtr);
if (!ret)
{
return(false);
}
if (!NativeMethods.InternetSetOption(IntPtr.Zero, INTERNET_OPTION.INTERNET_OPTION_SETTINGS_CHANGED, IntPtr.Zero, 0))
{
return(false);
}
if (!NativeMethods.InternetSetOption(IntPtr.Zero, INTERNET_OPTION.INTERNET_OPTION_PROXY_SETTINGS_CHANGED, IntPtr.Zero, 0))
{
return(false);
}
if (!NativeMethods.InternetSetOption(IntPtr.Zero, INTERNET_OPTION.INTERNET_OPTION_REFRESH, IntPtr.Zero, 0))
{
return(false);
}
return(true);
}
private static void Initialize(ref INTERNET_PER_CONN_OPTION_LIST options, ProxyType type, string url = null, string bypass = @"<local>")
{
var optionCount = (int)type;
var dwBufferSize = Marshal.SizeOf(typeof(INTERNET_PER_CONN_OPTION_LIST));
options.Size = dwBufferSize;
options.OptionCount = optionCount;
options.OptionError = 0;
var perOption = new INTERNET_PER_CONN_OPTION[optionCount];
var optSize = Marshal.SizeOf(typeof(INTERNET_PER_CONN_OPTION));
var optionsPtr = Marshal.AllocCoTaskMem(perOption.Length * optSize);// free
if (optionsPtr == IntPtr.Zero)
{
throw new NullReferenceException();
}
perOption[0].dwOption = INTERNET_PER_CONN_OptionEnum.INTERNET_PER_CONN_FLAGS;
switch (type)
{
case ProxyType.Direct:
{
perOption[0].Value.dwValue = INTERNET_OPTION_PER_CONN_FLAGS.PROXY_TYPE_AUTO_DETECT | INTERNET_OPTION_PER_CONN_FLAGS.PROXY_TYPE_DIRECT;
break;
}
case ProxyType.Pac:
{
perOption[0].Value.dwValue = INTERNET_OPTION_PER_CONN_FLAGS.PROXY_TYPE_AUTO_PROXY_URL | INTERNET_OPTION_PER_CONN_FLAGS.PROXY_TYPE_DIRECT;
perOption[1].dwOption = INTERNET_PER_CONN_OptionEnum.INTERNET_PER_CONN_AUTOCONFIG_URL;
perOption[1].Value.pszValue = StringUtils.IntPtrFromString(url);
break;
}
case ProxyType.Global:
{
perOption[0].Value.dwValue = INTERNET_OPTION_PER_CONN_FLAGS.PROXY_TYPE_PROXY | INTERNET_OPTION_PER_CONN_FLAGS.PROXY_TYPE_DIRECT;
perOption[1].dwOption = INTERNET_PER_CONN_OptionEnum.INTERNET_PER_CONN_PROXY_SERVER;
perOption[1].Value.pszValue = StringUtils.IntPtrFromString(url);
perOption[2].dwOption = INTERNET_PER_CONN_OptionEnum.INTERNET_PER_CONN_PROXY_BYPASS;
perOption[2].Value.pszValue = StringUtils.IntPtrFromString(bypass);
break;
}
default:
throw new ArgumentOutOfRangeException(nameof(type), type, null);
}
// copy the array over into that spot in memory ...
if (Environment.Is64BitProcess)
{
var baseAddress = optionsPtr.ToInt64(); //long
for (var i = 0; i < perOption.Length; ++i)
{
var opt = new IntPtr(baseAddress + i * optSize);
Marshal.StructureToPtr(perOption[i], opt, false);
}
}
else
{
var baseAddress = optionsPtr.ToInt32(); //Int
for (var i = 0; i < perOption.Length; ++i)
{
var opt = new IntPtr(baseAddress + i * optSize);
Marshal.StructureToPtr(perOption[i], opt, false);
}
}
options.pOptions = optionsPtr;
}
